A heterocyclic compound and an organic light-emitting device including the same are provided. The heterocyclic compound is represented by Formula 1: ##STR00001## Details of R1, R2, R3, X1, L1, and a1 and b1 are provided in the disclosure.

A composition includes two or more near infrared absorbing compounds having an absorption maximum in a wavelength range of 650 to 1000 nm and having a solubility of 0.1 mass % or lower in water at 23° C., in which the two or more near infrared absorbing compounds include a first near infrared absorbing compound having an absorption maximum in a wavelength range of 650 to 1000 nm, and a second near infrared absorbing compound having an absorption maximum in a wavelength range of 650 to 1000 nm which is shorter than the absorption maximum of the first near infrared absorbing compound, and a difference between the absorption maximum of the first near infrared absorbing compound and the absorption maximum of the second near infrared absorbing compound is 1 to 150 nm.

The invention discloses a dye sensitizer molecule taking triazole as a core and a preparation method of the dye sensitizer molecule. According to the dye molecule, a triazole ring is introduced to the design of a molecular structure, and the electronic absorption and transmission capability among D-pi-A dye molecules are greatly improved by substituting donors with different carbon chain lengths and receptors with triple bonds at the periphery, so that a novel triazole dye with high efficiency is obtained. The preparation method of the compound comprises: click chemical reaction, detrimethylsilyl reaction, Sonogashira coupling reaction and the like; and the prepared dye molecule can be applied to a dye-sensitive solar cell and can show favorable photoelectric conversion property so as to have wide application prospects on the aspects of energy development and utilization. In addition, the material also has liquid crystal property under a certain condition so as to also have a huge potential on the aspect of application to photoelectric devices.

In one aspect, the present disclosure relates to a masked fluorogenic compound comprising a small molecule protecting group that can be cleaved following a reaction with a biomarker. In some embodiments, cleavage of the small molecule protecting group provides a fluorogenic ligand that binds to an aptamer, leading to fluorescence emission. In another aspect, the present disclosure relates to a method of detecting a disease or a disorder in a subject and/or in a biological sample from the subject.

A fluorescent dye, a preparation method and uses thereof, wherein the fluorescent dye has the advantages of sensitivity and specificity to viscosity response, low background fluorescence and the like, and can also be used as a fluorescence activated and lightened-up probe for fluorescence labeling, quantification or detection of proteins, enzymes or nucleic acids.

Provided are a ruthenium complex dye having a water content of 0.2% to 4.0% by mass; a dye solution including the ruthenium complex dye; a photoelectric conversion element having semiconductor fine particles having the ruthenium complex dye carried thereon; and a dye-sensitized solar cell including the photoelectric conversion element.

The present invention relates, inter alia, to compositions comprising, a compound which is able to emit and/or absorb light and a compound which is able either to absorb or emit light, where both compounds each include at least one fluorine radical. The present invention is furthermore directed to a process for the preparation of the composition, to the use of the composition in electronic devices and to the device itself.

Fluorescence quenching nitrodiarylethene analogs are useful in oligonucleotide conjugates and probes. These analogs, whose absorption spectra are substantially blue-shifted relatively to emission spectra of common fluorophores (such as fluorescein), do not need to rely on spectral overlap of quencher absorbance and fluorophore's emission for their quenching abilities. The oligonucleotide-quencher conjugates may be used in detection methods for nucleic acid targets.

There is provided a light absorption filter, an optical filter, an OLED display device, or a liquid crystal display device, containing a resin; a dye that has a main absorption wavelength band at a wavelength of 400 to 700 nm; and a compound that generates a radical upon ultraviolet irradiation, in which the dye includes a specific squarine-based coloring agent represented by General Formula (1) or a specific benzylidene-based coloring agent or cinnamylidene-based coloring agent represented by General formula (V).

A compound comprises at least one fluorescent moiety covalently bound to at least one second moiety selected from the group consisting of leuco moieties and chromophore moieties.